Method and apparatus for handoff in a communication system supporting multiple service instances
AssigneeQUALCOMM Incoporated
InventorsJun Wang, Raymond T. Hsu
Life of this patent
Estimating the term…
Abstract
Method and apparatus for effecting handoff in a system supporting both wireless and packet date service communications. In one embodiment, the serving network provides information to the target network sufficient to establish the Point-to-Point Protocol (PPP) connections for handoff. In an alternate embodiment, the serving network and the target network do not share capabilities with respect to concurrent multiple service instances. When the serving network knows the status of the target network, the serving network takes responsibility for the handoff.
Claims21
A method for handoff in a communication system, comprising:
- establishing a main link and a secondary link between a mobile unit a serving packet data service node via a serving radio network;
- initiating a handoff from the serving radio network to a target radio network;
- and
- sending a message to a target packet data service node identifying the main link.
A method for handoff in a communication system, comprising:
- initiating handoff from a serving radio network to a target radio network;
- receiving a registration request from a target radio network;
- sending a link initiation message to a mobile unit on a first link via the target radio network, the first link associated with a first service instance;
- and
- sending the link initiation message to the mobile unit on a second link via the target radio network, the second link associated with a second service instance.
A method for handoff in a communication system, comprising:
- initiating a handoff from a serving radio network to a target radio network, the serving radio network adapted to support multiple service instances, the target radio network adapted to support one service instance;
- terminating a secondary link to the serving radio network;
- sending main link information of the serving radio network to the target radio network;
- and
- performing handoff to the target radio network.
A method for handoff in a communication system, comprising:
- initiating a handoff from a serving radio network to a target radio network, the serving radio network coupled to a serving packet data service node adapted to support multiple service instances, the target radio network coupled to a target packet data service node adapted to support one service instance;
- sending main link information of the serving radio network to the target radio network;
- and
- performing handoff to the target radio network.
An apparatus in a communication system, comprising:
- means for establishing a main link and a secondary link between a mobile unit a serving packet data service node via a serving radio network;
- means for initiating a handoff from the serving radio network to a target radio network;
- and
- means for sending a message to a target packet data service node identifying the main link.
An apparatus in a communication system, comprising:
- means for initiating handoff from a serving radio network to a target radio network;
- means for receiving a registration request from a target radio network;
- means for sending a link initiation message to a mobile unit on a first link via the target radio network, the first link associated with a first service instance;
- and
- means for sending the link initiation message to the mobile unit on a second link via the target radio network, the second link associated with a second service instance.
An apparatus in a communication system, comprising:
- means for initiating a handoff from a serving radio network to a target radio network, the serving radio network adapted to support multiple service instances, the target radio network adapted to support one service instance;
- means for terminating a secondary link to the serving radio network;
- means for sending main link information of the serving radio network to the target radio network;
- and
- means for performing handoff to the target radio network.
A packet data service node in a communication system, adapted to:
- establish a main link and a secondary link with a mobile unit via a serving radio network;
- initiate a handoff to a target radio network;
- and
- send a message to a target packet data service node identifying the main link.
Dependencies are inferred from the claim text.